Pub Date : 2023-12-06DOI: 10.1615/multscientechn.2023047919
Domenico Fiorini, Louis Carbonnelle, A. Simonini, J. Steelant, D. Seveno, M. A. Mendez
The motion of a gas-liquid interface along a solid wall is influenced by the capillary forces resulting from the interface's shape and its interaction with the solid, where it forms a dynamic contact angle. Capillary models play a significant role in the management of cryogenic propellants in space, where surface tension dominates the behaviour of gas-liquid interfaces. Yet, most empirical models have been derived in configurations dominated by viscous forces. In this study, we experimentally investigate the wetting of a low-viscosity, highly wetting fluid in a reduced gravity environment. Our setup consisted of a transparent and diverging U-tube in which capillary forces sustain the liquid motion. Combining Particle Image Velocimetry (PIV) and high-speed backlighting visualization, the experimental campaign allowed for measuring the interface evolution and the velocity field within the liquid under varying gravity levels. This work reports on the preliminary results from the image velocimetry and shows that the velocity profile within the tube is close to parabolic until a short distance from the interface. Nevertheless, classic 1D models for capillary rise face difficulties reproducing the interface dynamics, suggesting that the treatment of the surface tension in these problems must be reviewed.
{"title":"Characterization of a capillary driven flow in microgravity by means of optical technique","authors":"Domenico Fiorini, Louis Carbonnelle, A. Simonini, J. Steelant, D. Seveno, M. A. Mendez","doi":"10.1615/multscientechn.2023047919","DOIUrl":"https://doi.org/10.1615/multscientechn.2023047919","url":null,"abstract":"The motion of a gas-liquid interface along a solid wall is influenced by the capillary forces resulting from the interface's shape and its interaction with the solid, where it forms a dynamic contact angle. Capillary models play a significant role in the management of cryogenic propellants in space, where surface tension dominates the behaviour of gas-liquid interfaces. Yet, most empirical models have been derived in configurations dominated by viscous forces. In this study, we experimentally investigate the wetting of a low-viscosity, highly wetting fluid in a reduced gravity environment. Our setup consisted of a transparent and diverging U-tube in which capillary forces sustain the liquid motion. Combining Particle Image Velocimetry (PIV) and high-speed backlighting visualization, the experimental campaign allowed for measuring the interface evolution and the velocity field within the liquid under varying gravity levels. This work reports on the preliminary results from the image velocimetry and shows that the velocity profile within the tube is close to parabolic until a short distance from the interface. Nevertheless, classic 1D models for capillary rise face difficulties reproducing the interface dynamics, suggesting that the treatment of the surface tension in these problems must be reviewed.","PeriodicalId":34942,"journal":{"name":"Multiphase Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67730668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1615/multscientechn.2023047892
A. A. Alqahtani, V. Bertola
{"title":"FLOW VISUALIZATION AND FLOW PATTERNS IN A FLAT-PLATE POLYPROPYLENE PULSATING HEAT PIPE","authors":"A. A. Alqahtani, V. Bertola","doi":"10.1615/multscientechn.2023047892","DOIUrl":"https://doi.org/10.1615/multscientechn.2023047892","url":null,"abstract":"","PeriodicalId":34942,"journal":{"name":"Multiphase Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67730576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1615/multscientechn.2023048506
vivek deshmukh, Satish Kumar Dewangan
The present work deals with the cuttings transport in eccentric directional wellbore based on CFD simulation using ANSYS Fluent. Oil and gas industries have shifted to directional drilling for excessive oil exploration. Improper borehole cleaning leads to severe drilling problems that lead to permanent loss of the drilling site. The effect of wellbore inclination and eccentricity on cutting transport is investigated for the slurry inlet velocity, rotation of drillpipe and cuttings size. The considered flow is two-phase flow primary phase is CMC-bentonite solution and secondary phase is cuttings of different sizes. The Eulerian-Eulerian multiphase model has been implemented for flow through annulus along with RNG k-ε mixture turbulence model. The important findings related to effect of eccentricity and borehole inclination on cuttings transport has been explored for various drilling parameters.
{"title":"CFD simulation of cuttings transport in eccentric horizontal and inclined annulus","authors":"vivek deshmukh, Satish Kumar Dewangan","doi":"10.1615/multscientechn.2023048506","DOIUrl":"https://doi.org/10.1615/multscientechn.2023048506","url":null,"abstract":"The present work deals with the cuttings transport in eccentric directional wellbore based on CFD simulation using ANSYS Fluent. Oil and gas industries have shifted to directional drilling for excessive oil exploration. Improper borehole cleaning leads to severe drilling problems that lead to permanent loss of the drilling site. The effect of wellbore inclination and eccentricity on cutting transport is investigated for the slurry inlet velocity, rotation of drillpipe and cuttings size. The considered flow is two-phase flow primary phase is CMC-bentonite solution and secondary phase is cuttings of different sizes. The Eulerian-Eulerian multiphase model has been implemented for flow through annulus along with RNG k-ε mixture turbulence model. The important findings related to effect of eccentricity and borehole inclination on cuttings transport has been explored for various drilling parameters.","PeriodicalId":34942,"journal":{"name":"Multiphase Science and Technology","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135319912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1615/multscientechn.2023047547
T. Fujikawa, R. Egashira, K. Hooman, Masakazu Fukuda, S. Fujikawa
{"title":"DYNAMICAL THRESHOLD OF CAVITATION DUE TO WEAK TENSION INDUCED BY WATER FLOWS","authors":"T. Fujikawa, R. Egashira, K. Hooman, Masakazu Fukuda, S. Fujikawa","doi":"10.1615/multscientechn.2023047547","DOIUrl":"https://doi.org/10.1615/multscientechn.2023047547","url":null,"abstract":"","PeriodicalId":34942,"journal":{"name":"Multiphase Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67729950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1615/multscientechn.2023046998
Mikhail Romanovski
{"title":"Phase transition retrieval through in situ observations","authors":"Mikhail Romanovski","doi":"10.1615/multscientechn.2023046998","DOIUrl":"https://doi.org/10.1615/multscientechn.2023046998","url":null,"abstract":"","PeriodicalId":34942,"journal":{"name":"Multiphase Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67729616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1615/multscientechn.2023047133
D. Sa’adiyah, Kanta Sato, Ryo Kurimoto, Kosuke Hayashi, A. Tomiyama
{"title":"Carbon dioxide-water bubbly flow in a vertical pipe with or without chemical absorption","authors":"D. Sa’adiyah, Kanta Sato, Ryo Kurimoto, Kosuke Hayashi, A. Tomiyama","doi":"10.1615/multscientechn.2023047133","DOIUrl":"https://doi.org/10.1615/multscientechn.2023047133","url":null,"abstract":"","PeriodicalId":34942,"journal":{"name":"Multiphase Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67729715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1615/multscientechn.2023047718
Y. Alhendal
{"title":"Wall Effects on the Thermocapillary Migration of Isolated Droplet in Liquids","authors":"Y. Alhendal","doi":"10.1615/multscientechn.2023047718","DOIUrl":"https://doi.org/10.1615/multscientechn.2023047718","url":null,"abstract":"","PeriodicalId":34942,"journal":{"name":"Multiphase Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67730152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this work several computational approaches are tested for the two-phase simulation of the ELUBSYS bearing chamber in the high-speed regime - a 4-equation Eulerian multi-fluid model, a steady-state Eulerian Integral Thin Film (EITF) approach, a Discrete Parcel Method (DPM) approach and a simplified EITF-DPM coupled approach. While computationally expensive, the multi-fluid model captured the global liquid dynamics in the chamber and predicted that most of the oil is in the form of a thin film that flows on the stationary walls. The much more cost-efficient EITF approach achieved accurate results for the oil thickness distribution at the counter-current region but did not account for the large amounts of oil flowing out through the top vent. The DPM approach was used to assess the dispersed phase dynamics in both one-way and two-way coupling configurations, outlining a significant influence of the latter on the gas phase dynamics. Finally, the coupled EITF-DPM approach was able to overcome some of the limitations observed by its individual counterparts by predicting a continuous film throughout the chamber circumference and a higher vent outflow, while still retaining most of the expected film distribution characteristics in the bearing chamber.
{"title":"Assessment of Multi-Fluid, Eulerian Integral Thin Film and DPM Approaches for the Numerical Simulation of a Bearing Chamber","authors":"Nikolay Kirov, Davide Zuzio, Jean-Mathieu Senoner, Claire Laurent, Mathieu Picard, Jean-Luc Estivalezes","doi":"10.1615/multscientechn.2023047885","DOIUrl":"https://doi.org/10.1615/multscientechn.2023047885","url":null,"abstract":"In this work several computational approaches are tested for the two-phase simulation of the ELUBSYS bearing chamber in the high-speed regime - a 4-equation Eulerian multi-fluid model, a steady-state Eulerian Integral Thin Film (EITF) approach, a Discrete Parcel Method (DPM) approach and a simplified EITF-DPM coupled approach. While computationally expensive, the multi-fluid model captured the global liquid dynamics in the chamber and predicted that most of the oil is in the form of a thin film that flows on the stationary walls. The much more cost-efficient EITF approach achieved accurate results for the oil thickness distribution at the counter-current region but did not account for the large amounts of oil flowing out through the top vent. The DPM approach was used to assess the dispersed phase dynamics in both one-way and two-way coupling configurations, outlining a significant influence of the latter on the gas phase dynamics. Finally, the coupled EITF-DPM approach was able to overcome some of the limitations observed by its individual counterparts by predicting a continuous film throughout the chamber circumference and a higher vent outflow, while still retaining most of the expected film distribution characteristics in the bearing chamber.","PeriodicalId":34942,"journal":{"name":"Multiphase Science and Technology","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136210083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1615/multscientechn.2023047880
Haslinda Kusumaningsih, D. Deendarlianto, I. Indarto, Muhammad Fakhri Alfath, M. Madani, Aldy Franstanata Ritonga
{"title":"Fractal Analysis of Gas-non-Newtonian Liquid Two-Phase Flow in Microchannels","authors":"Haslinda Kusumaningsih, D. Deendarlianto, I. Indarto, Muhammad Fakhri Alfath, M. Madani, Aldy Franstanata Ritonga","doi":"10.1615/multscientechn.2023047880","DOIUrl":"https://doi.org/10.1615/multscientechn.2023047880","url":null,"abstract":"","PeriodicalId":34942,"journal":{"name":"Multiphase Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67730290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1615/multscientechn.2023047899
Eugene Gatete, Akiko KANEKO, Biao SHEN
{"title":"EFFECT OF CURVATURE DISTORTION AND REFRACTIVE INDEX ON FLOW MEASUREMENT IN A DROPLET","authors":"Eugene Gatete, Akiko KANEKO, Biao SHEN","doi":"10.1615/multscientechn.2023047899","DOIUrl":"https://doi.org/10.1615/multscientechn.2023047899","url":null,"abstract":"","PeriodicalId":34942,"journal":{"name":"Multiphase Science and Technology","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135401254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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